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Posted to commits@nuttx.apache.org by ac...@apache.org on 2020/12/09 12:44:19 UTC
[incubator-nuttx] 02/06: arch/xtensa/src/common/xtensa_context.S:
Don't save CALL0 ABI callee-saved registers.
This is an automated email from the ASF dual-hosted git repository.
acassis pushed a commit to branch master
in repository https://gitbox.apache.org/repos/asf/incubator-nuttx.git
commit 5f9d9ba44cc43729a5c6a43ca4abf6531f99d3b0
Author: Abdelatif Guettouche <ab...@espressif.com>
AuthorDate: Fri Nov 27 11:17:07 2020 +0000
arch/xtensa/src/common/xtensa_context.S: Don't save CALL0 ABI
callee-saved registers.
Signed-off-by: Abdelatif Guettouche <ab...@espressif.com>
---
arch/xtensa/src/common/xtensa_context.S | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/arch/xtensa/src/common/xtensa_context.S b/arch/xtensa/src/common/xtensa_context.S
index ef47c06..95f3321 100644
--- a/arch/xtensa/src/common/xtensa_context.S
+++ b/arch/xtensa/src/common/xtensa_context.S
@@ -126,12 +126,14 @@ _xtensa_context_save:
s32i a10, a2, (4 * REG_A10)
s32i a11, a2, (4 * REG_A11)
- /* Call0 ABI callee-saved regs a12-15 */
+ /* Call0 ABI callee-saved regs a12-15 do not need to be saved here */
+#ifndef __XTENSA_CALL0_ABI__
s32i a12, a2, (4 * REG_A12)
s32i a13, a2, (4 * REG_A13)
s32i a14, a2, (4 * REG_A14)
s32i a15, a2, (4 * REG_A15)
+#endif
rsr a3, SAR
s32i a3, a2, (4 * REG_SAR)
@@ -482,10 +484,12 @@ _xtensa_context_restore:
/* Call0 ABI callee-saved regs a12-15 */
+#ifndef __XTENSA_CALL0_ABI__
l32i a12, a2, (4 * REG_A12)
l32i a13, a2, (4 * REG_A13)
l32i a14, a2, (4 * REG_A14)
l32i a15, a2, (4 * REG_A15)
+#endif
ret